Hydrocarbon-burner.



N0 MODEL.

PATENTED OCT. ll, 1904. B. C. WOODFORD. HYDROCARBON BURNER.

APPLICATION FILED NOV.27, 1903.

* EVE/#a y 5% i@ Patented October 11, 1904.

UNITED STATES PATENT OFFICE.

BRONSON C. IVOODFORD, OF HOLYOKE, MASSACHUSETTS.-

HYDROCARBON-BURNER.

SPECIFICATION forming part of Letters Patent No. 772,016, dated October11, 1904.

Application filed November 27, 1903. Serial No. 182,833. (No model.)

To all whom, it wtcty concern:

Be it known that I, BRONSON C. WOODFORD, a citizen of the United States,residing at Holyoke, in the county of Hampden, in the State ofMassachusetts, have invented certain new and useful Improvements inHydrocarbon- Burners, of which the following is :a specification.

My invention relates to improvements in hydrocarbon-burners; and themain object of my improvement is to make the burner automatic.

In the accompanying drawings, Figure 1 is a central longitudinal sectionof my burner with some of the parts in elevation. Fig. 2 is a detachedend view or front elevation of a fish-tail nozzle for use with myburner.

A designates the casing or shell, having an inlet 3 and boss 4., towhich boss an oil-supply pipe 5 may be connected. The said casing alsohas a secondary inlet 6 and boss 7 for connecting the supplyepipe 8 forsteam or other fluid for commingling with bthe oil. The interior of thecasing A is cylindrical, but has different portions in the lengththereof on different diameters. A delivery-head on plug 9 is screwed upagainst a shoulder 10 in the outer end of the casing, the said plughaving at its inner end a central stem 11, with apointed end 12 to actas a valve. A short portion 13 of this stem adjacent to the pointed endis of a reduced diameter, and extending from the periphery of the stemat the said reduced portion to the body of the delivery-head there is anoil-passage 14. The outer end of the head 9 is bored and threaded on twodifferent diameters to receive, respectively, the outer nozzle 15 andinner nozzle 16, the latter communicating with the oil-passage 14. inthe stem 11, while the outer nozzle 15 communicates, by the passage 16,with the annular chamber 17, that'surrounds the stem 11 at a pointadjacent to the secondary or steam-supply inlet 6. The inner nozzle forthe oil screws up against a shoulder, while the outer nozzle may bescrewed in more or less, as may be desired, to adjust the relativeposition of these nozzles to each other at their effluent ends. Anordinary check-nut 18 is provided for holding the outer nozzle in itsadjusted position. The other end and body of the casing is mainly filledby a iioating slide 19, that is fitted at each end to the differentinner diameters of the said casing, although a portion of the said slideadjacent to the oil-inlet 3 is smaller than the surroundinginner wall ofthe casing, so as to form the connecting annular chamber 20, thatcommunicates with the diametrical passage 21, ad-

jacent to the valve 22 and its seat. The valve 22 is a screw-pinentering a central bore in the floating slide, and the outer end ofthesaid pin is provided with a handle 23, while the outer end of the slideis provided with a handle 24, so that the slide may be held againstrotation while the valve is turned by its handle to adjust the valverelatively to its seat for leaving it open more or less, as may bedesired. The otherend of the slide is bored centrally to fit the stem 11and has a connecting-passage 25 between the two valves 22 and 12 of asmaller bore than that for the said valves, so that a valve-seat isformed at cach end of the connecting-passage. Fitting the cylindricalstem 11 to the bore of the slide 19 forms a closure of the steam-chamber17 on that side to which the said slide is presented. In all cases where.the word "steam7 is herein used air or other iuid under pressure isconsidered the equivalent thereof.

The outer nozzle 15 is provided with a centrally-arranged orifice,preferably round, for throwing a central stream or spray, and theexterior of said nozzle may be of any ordinary form. I prefer, however,in some cascs to provide its outer end with a threaded portion 26 forthe application when desired of an additional nozzle for changing theform of the discharge. I have shown an additional nozzle 27 as thusapplied, the said nozzle being of a flattened form with a slit-likeorifice 30, as shown in Fig. 2, for delivering a flattened stream orspray, making what is sometimes designated as a fish tail burner. The

burner can be used either with or without an additional nozzle, as maybe desired.

The main and secondary supply-pipes 5 and 8 may be provided with anysuitable cut-off valves 28, and I prefer to connect the said The oil andthe steam are both delivered or' designed to be delivered to theirrespective inlets at predetermined pressures. IV ith the valve 28 in theby-pass 29 closed and both pipes delivering properly the opposing' facesof the slide 19 as presented to the respective annular chambers 2() and17 are so related to the steam and oil pressure that the pressure of thesteam in the annular chamber 17 will overbalance the opposing pressureof the oil in the annular chamber 20, and thereby force the floatingslide which carries the seat for the valve 12 away from the said valve,moving the parts from their closed position, as represented in thedrawings, to their open 'position, so that oil may flow in through thepassage 25, (the valve 22 having been adjusted to admit the desiredquantity of oil to the y said passage 25,) past the valve 12, throughpassage 14 to and through the inner nozzle 16. At the same time steam(or air) will flow in from the annular chamber 17 to and through theouter nozzle 15, and the oil and steam will mix at the junction of thesaid two nozzles in the outer end of the outer nozzle and the commingledoil and steam be discharged in the usual manner from the said outernozzle 15 directly into the iire or, if desired, into the additionalnozzle 27 and then into the ir'e. The How will continue as long as thesupplies are kept up at the proper pressures; but if the pressure of thesteam fails or falls materially below its intended pressure there is nolonger any counterbalaneing of or resistance to the oil-pressure on theslide in the annular chamber 20, and hence the slide will automaticallymove to the position shown in the drawings and close the valve 12, so asalso to cut off the supply of oil and stop the burner. The valve 12 willbe automatically opened whenever there is the proper steam-pressure inthe annular chamber 17.

In order that oil may be fed to and through the burner independently ofthe secondary supply for any desired purpose-as, for eX- ample, togenerate steam from the heat of the burner when the steam is suppliedfrom a coil of pipe over the lire of the burner-the valve 28 in thesecondary supply-pipe 8 may be closed and the valve 28 in the by-passopened, so that oil may '.iow to the burner through the secondary inlet6, and the burner may be used for oil alone until such time as theproper steam-pressure is p rodueed. The valve 28 in the by-pass may thenbe closed and the Valve 28 in the secondary supply-pipe opened, when theburner will adjust itself automatically to deliver the commingled oiland steam, as before described.

It is apparent that some changes from the speeilic construction hereindisclosed may be made, and therefore I do not wish to be understcod aslimiting myself tothe precise form of construction shown and described,butdesire the liberty to make such changes in working my invention asmay fairly come within the spirit and scope of the same.

I claim as my invention- 1. In a hydroearbon-burner, the combination ofa casing having two inlets with aslide having an oil-supply passage andhaving also opposing faces, and a head at the delivery end of the saidcasing, having an oil-passage forming a continuation of the oil-supplypassage of the said slide, the said parts forming within the casing twoannular chambers inside of the said casing into which chambers the saidtwo inlets deliver, the said opposing faces of the said slide beingpresented to the said chambers and the said slide and head having withinthe said oil-passage the one a valveseat and the other a valve, the samebeing arranged to open and close the oil-passage within the said slideby the movement of the said slide.

2. rIhe combination of the casing with a delivery-head having adelivery-stem with an oil-passage therethrough, and a slide arrangedwithin the said casing, the said parts forming within the said easing achamber for oil and another chamber for steam, the said slide having atone end a bore litted to the said delivery-stem for forming a closure ofthe said steam-chamber on that side to which the said slide ispresented, the said head and stem having the one a valve and the other avalve-seat, the said slide also having a passage leading to the saidvalve and opposing pressure-faces presented respectively to the said twochambers.

8. In a hydrocarbon burner, having an outer nozzle for delivering mixedoil and steam, the combination of a casing having a ehambered interiorwith a slide within'the said easing forming two separate chambers foroil and steam, the said slide having an oilpassage therethrough andopposing faces presented to the said chambers, a valve operated by themovement of the said slide and an inclosed oil-passage leading from thesaid valve to the said delivery-nozzle.

4. In a hydrocarbon-burner, the combination of a casing having aehambered interior, with a slide within the said casing forming separatechambers for steam and oil and having a passage for oil therethrough, atlXed valve in the said casing for opening' and closing the outlet tothe oil-passage through the slide, a head at the delivery end of thecasing, concentric tubes mounted in the said head with their endsforming an inner nozzle for oil and an outer nozzle for mixed steam andoil, an inelosed oil-passage leading from the said iixed valve to theinner one of the said concentric tubes, and a separate passage leadingfrom the steam-chamber to the outer one of the said concentric tubes,whereby, when TOO IIO

the oil-passage through the slideis opened by the said slide and valve,the oil may i'low freely from the said valve to the said inner one ofthe concentric tubes but cannot enter the steam-chamber.

5. In a hydrocarbon-burner, the combination of a casing having achambered interior with a slide within the said casingforming twoseparate chambers for steam and oil under different pressures, the saidslide having an oil-passage therethrough and opposing pressure-faces ofdiffering areas inversely proportionate to the respective pressures uponthe said faces, and a valve for the `oil-chamber operated by themovements of the said slide to reduce the iiow of oil through theoilpassage in the said slide when the steam falls below normal pressure,and to cut otl the iiow of oil whenever the steam-pressure ceases.

6. In a hydrocarbon-burner, the combination of a casing having` achambered interior with a slide within the said casing forming twoseparate chambers for steam and oil, the said slide having a passage foroil therethrough with a valve-seat at its delivery end, a fixed valveAin the casing acting with the said slide to open and close the saidoil-passage, and means operated from the exterior of the casing forvarying the size of the inlet to the said oil-passage through the saidslide, substantially as described.

7 In a hydrocarbon-burner, the combination of a casing having a=charnbered interior with a slide arranged therein forming two separatechambers for oil and steam, the said slide having an oil-passagetherethrough and opposing pressure-faces, the said faces being presentedrespectively to the said chambers, a valve at the delivery end of thesaid oilpassage through the slide for controlling the iow of oil by themovements of the said slide, and another valve arranged to be operatedfrom the exterior for regulating the size of the said oil-passage at itsinfluent end.

BRONSON C. WOODFORD.

Witnesses:

THEO. L. LA FRANCE, WM. C. WooDFoRD.

